Overview

1. 24. (EM) Properties of Circles [2021]

Last week, we have completed the chapter, Properties of Circles. We went back to some unanswered properties we encountered in Equation of Circles. To sum up, we learnt: Symmetric Properties of Circles - perpendicular bisector of a chord Angle Properties of Circles - angle at centre = 2x angle at circumference - angles in the same segment - angle in semi-circle Cyclic quadrilateral - angles in opposite segments Tangent theorem - Tangent perpendicular to radius - Tangent from external point Alternate Segment Theorem - when you see a triangle in a circle and a tangent
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